After I got my M817 home, my dad and I was just standing around looking at it and wondered. How to you get the tailgate from the "rocker" mode to the "normal" swing open mode? I'm not talking about, pull the pins, push up the gate, and put in pins. How did soldiers in the field do it, the tailgate looks heavy! Do you raise the bed and use 2-3 guys? Use a come-along? Loader? What are the tricks? Thanks in advance.